Kael is actually Gaelic, and could mean, either 1) Might Warrior, or 2) Slender, fair. I could not have picked a more appropriate name for a Blood Elf Paladin, could I?

The -stra suffix is Friesian. When they were forced to adopt surnames by the French, some simply added some suffixes to what they already had.

It used to be they, the Friesians, had two names, and for their son they reversed it. Jan Kirk’s son was typically Kirk Jan. Well, the French came and you got the Janstra family. (I’m probably simplifying.)

Kaelstra.

And it’s Gaelic+Friesian. And, oddly, my dad’s side is of Scottish origin, and my mom’s of German.